He said: “We must never lose sight of the fact that legal aid is paid for by the taxpayer. The total costs in some cases seem very high, and many will question whether they provide value for money.”

Hamza was put on a plane to the US after the last of countless legal appeals was thrown out of court. Freedom of information requests revealed his lawyers were paid £445,452.65 to defend him against charges of inciting terrorism. Legal costs against extradition cost £165,460.81.

Hamza was also given legal aid worth £68,107.33 to fight attempts by the Home Office to remove his passport, a case he won.

The total cost included more than £400,000 for Hamza’s solicitors, Arani and Co, and more than £100,000 for barrister Edward Fitzgerald QC.

The Home Office spent £79,728 on legal costs for the extradition case, and another £150,674.91 in its efforts to strip Hamza of his passport. The total legal bill for taxpayers was £909,423.70.

Robert Oxley, of the TaxPayers’ Alliance, said: “Taxpayers appear to have been the last ones in anyone’s thoughts during Hamza’s fight.”

Hamza is accused of involvement in a plot in Yemen in 1998 that led to the deaths of three Brits. He also faces charges of setting up a terror training camp in Oregon.